Motional Dressed States in a Bose-Einstein Condensate: Superfluidity at Supersonic Speed

2000/04/06 by C. K. Law, C. M. Chan, P. T. Leung +2 · 5 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Mechanical and Optical Resonators #Quantum, superfluid, helium dynamics #cond-mat.soft

paper · pdf · doi:10.1103/physrevlett.85.1598

4 pages, 2 figures

arxiv created 2000/04/06 · openalex publication_date 2000/08/21 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We present an exact analytic solution of a nonlinear Schrodinger field interacting with a moving potential (obstacle) at supersonic speed. We discover conditions under which the field can form a stable shape-invariant structure localized around the obstacle-a dressing effect that protects the field against excitations by the obstacle. Such an effect demonstrates the existence of frictionless motion beyond the conventionally defined critical velocity.

Cited by

• Nonautonomous bright and dark solitons of Bose–Einstein condensates with Feshbach-managed time-dependent scattering length
• Roadmap on Atomtronics: State of the art and perspective
• Conditions for order and chaos in the dynamics of a trapped Bose-Einstein condensate in coordinate and energy space
• Nonequilibrium Dynamics of a Bose-Einstein Condensate Excited by a Red Laser Inside a Power-Law Trap with Hard Walls
• Bose-Einstein beams: Coherent propagation through a guide